Question:In a school, `10%` of the boys are same in number as `1/4`th of the girls and `10%` of the girls are same in number as `1/(25)`th of the boys. What is the ratio of boys to girls in that school ? 

A `3 : 2` 
B `5 : 2` 
C `2 : 1` 
D `4 : 3` 

+ Answer
B 

+ Explanation
`(10)/(100) B = 1/4 G` and 

`(10)/(100) G = 1/(25) B`

`2B - 5G = 0 ` and 

`5G - 2B = 0`.

`:. 2B = 5G` or

`B/G = 5/2`.

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Md. Habib Ullah

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